Pump unit for railway equipment



c. w. Bu'r'rRlcK' PUIP UNIT FOR RAILWAY EQUIPMENT origina Filed Aprilv 1v. 1922 July?, 1925.

3 Sheeis-Sheet 1 /l PIG.

INvENToFe CHARLES WBuTTHncK y Aufs July 7, 1925. u

. c. w. lawn-mex` rtm1 mur von RAILWAY EQUIPMENT l origin.; Find Apri-1 17. 1922 ssheetsheef. 2

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WITNESSES A NVENTOF? Q lC/Mmss W BUT-:PICK

' C. w. BUTTRICK FUI? UNIT FOR RAILWAY EQUIPMENT July 7, 1925,

fir-LINNN v Q\ Patented July 7, 1925. 5

UNITED STATE CHARLES W, BUTTBICK; 0I" SPRINGFIELD, ILLINOIS.

original application nica April i7, i922, serial No. 553,623. Divided and this appiieatitniiia obtener 5 YUM? UNIT ropa RAILWAY EQ'UIPMENI.

17, 1923..V serian No. 669,001.

To all whom t may concern:

Be it known that I, CHARLES lV. Boi'iTiiIoK,

a citizen of the VUnited States, residing at Springfield, in the county of Sangamon and State of Illinois, haveinvented a new and useful Pump Unit for Railway Equipment, of which the following is a specification.

This application is a division of my appli-V I cation, Serial Number 553,623, Railway 'gate-equipment,- filed April 17, 1922.

The invention relates to piimp-unitsused for actuating Vfluidy motors for roperating one detached pump unit, showing the cover y raised somewhatabove the cylinders ofthe.

railway gates orother mechanisms. `I-have shownin the drawings, and will now ,de-

scribe, pump units embodying my inven-V tion, as applied in la railway equipment comprising pump units, hydraulic ror fluid motors, a reservoir containing fluid supply,

pipe lines receiving fluid` from the reservoir,

pipelines conveying fluid to and from the motors; and gates actuated by themotors;

r' railway tracks, the pumps of' each series being in pairs, one pump of eachp'air being operative by trains moving ineither direction on the track andthe otherpump of the same pair beinglikewise operative by trains moving inA either direction on the same track; to provide-pumpsof improved construction; to 'provide improvedv means for securing the pumps in fixed relationto the railsof the trackgto provide means for absorbing the shocks incident to the intermittent, sudden, and violent action of the pumps; to provide vmeans for-.equalizing the pressure in all the pipe lines; and togaprovide other structural details, as will hereinafter appear.

With these ends in view, the invention consists inv the novel features of construction and combinations kof parts shown in the accompanying drawings, to which reference isl hereby made. The. invention will now be fully described.

and finally recited :in the claims.

Figure lis a top plan of kfone pump unit embodying my invention;

`Fig."2,is an end view of the same pump unit; Fig. v3 is an enlarged, vvertical section taken on the line3-3 of Fig, 1,5the rocking plate being shown in'elevatioii; f

' Fig. 4 is a vertical sectionftalien on the line 4 4 of Fig. 1;

.unit and PATENT OFFICE. t

Fig. 5 isv a reducedperspective View of Fig. 6is a diagram of a railway gate equipmentv comprising a plurality of sets of pump units embodying my invention.

'Ihe same reference' letters and numerals designate the same parts in all the views.

i In Fig. 6 I have shown a `railway'equipment -comprising two parallel tracks13and v14; two sets of pump units-20- adjacent to each track, each set comprisingl four :pump- Yunits, but each set may comprise a greater.V

or less, even number .of pump-units, with fout. departure from'my invention. I have .also shown gate stands 16 'and 17 containing -uid motors which actuate the respectiveygatesilS and'. `19.

A reservoir 15 adJacent to the. railway tracks contains a` supply of oil or other fluid under ,compressed air. Black pipe lines21, 23 and-,25, inter-Communicatebe- "tween the reservoir 15, the black pumps of the; pump -iinits 20, the motors'M, andthe terminal-air domes 136; and red ipipe lines v22, 24 and 26.7inteizcommunicate withfthef i ,red pumpsv of Vthe pump` .units 2 0,y the'motors'M and the terminal air` domes 13S.r `Fluid from the` reservoir supplies loss from ,leakage invany part ofthesyStem. i p A Apipe 127 communicates .with the yinterior of the reservoir and witlithe pipes 131 and 132 ofthe pipe system; An outwardly opening valve`133. controls the flow of the valveA 134 controls the vflow'fof l,oil Ikin the,

lpipes 1,27 and 132.1rv

' The valves 133 and' openijioutwardlyi lines 21 and V22 Aoiyeither of them, 2is less than normal the proper valve orl valves will operate to. admit` oil. from Athe reservoir into y either Vor .both pipe lines, to replace oiland.

The pump unit-s are all alikeyso a--doscription of onejfwill; "suffice `for all. AThe pump unit is of cast iron and comprises a hase plate 40; cylinders '27"ai'id tegral With the base plate; a piston 29 slidvplate 3l (operatively connected with the pis-- tos'i29 aiidfSO; af cov'er82'havi1g flange connection with the cylinders 2j7falIi-d 28a-nd -and'ioeg' 'and otherstructural details 'I'ioiv to he described.

*The cylindersf2h7 'and 28 have Cou-titerV 'bores 12() V'to receive packing 12l-'surrunding the respective*pistons'29`and'f801" Rings "1221er-vvecl,ge-shape cross section -pres's the packing into 'close contact wvithth'e' eirc'luin- -fere'i'ice o'ffthe rp1s'to'n`s`,"'to l'prevent leakage.

VAnnularI lscrlefvvlthreaded vtollowvers` 123 lengage f internalA screw "threads in ithe counter bores 120 and Aact to press the'rings `122 evenly downward, toassure uniform presof- Huid (preferably oil) 'from the cylinders, each gateV having',` Vleak 'opening' l126:to'ier- -mizt'g'radual lretu'rn floiv 'ofrliu-id intofthe cylinders.' jVVhile the 'pistri is le'ii'ig" de- I pressed 'tlie' *valve-'gate vill Ibe -f'open :fa-iid 'tluifderom Ithe"'cylinder'-ivill Tloiv lrapidly through thefvali'e', tothe pipelin'e. y

when the' fvaiva geen@ ijs: desea; time eea "the v pipe fline"A will "fpass':I through Vthe" open ings 126 im@ the @yemen-toffee@trapal recurring? v'iltpivarcl and downward movement in the;V stationary Vvplate `Y1.16.

The? pla-te 116 iillsffthe space hetti'een the ties 117'; 'anathema r4. and. theE Cylinders to strengthen the `structure so f'tliatf vit will 'withstand -thelffszevere shock a-nd strain to Whicli'it s'sulijet Alemana (Figa-)1isiayedioethe Shaft tien-and has-ian integral extension-119 adja- 'f A fouer r11-3 wel@ appal @naief the Aim@ has jtruiin'ioiisi'-ll'l8 I rot-ate freely 'in aligned holes in the leXtens'i ofn)119 fand in ithe 'keeper-1,194@ The Y roller isin rela- A"ton tothe*heatl-l oft-he rail., that the fanfge 1,545,232 `V Q v of 'a 'car `Wheel *running onfthe rail Will er1- gage-theioller to' depress'ithe lever.t l

Y(iup-shape pistons 29 and 30, each having at itsf'upper endfanv integral rim 127 and each having a packing ring 33 near its lower end,''are adapted'to slide in the respective cylinders 27 and 28.

the respective pistons 29 and 30 and serve `upper end's Vand provided with nuts 129,- are iiredjat the upper ends of the' 'respective lcylinders and 28, and-extend throughthe "piston: laiiges: 127. W'hen" 'thefparts are assembled an'clthe` nuts are on'therods, the iiu't'sjlnay lo'e adjusted to vary tliesco-pe'of the outward 'slid'ingf the'p'istonsa'nd to prevent complete "expulsionk of :the-@pistons from `the cyli-nders','f' f,

In orderl't'o vdescribe clearly the mode 'of `operationet the"e'qiuip'rrientl it isv necessary @to dstiiiguishpfronil feach'fother, the Atwo f pumps 'Whicfli' constitute 1a'v single' pumfplunit.

and the other pump hlacl;" *YI-nFiggG-I `have-indi'catedfAconventionally a red 'pump antl'ablacl pump -in-feacli ypum'p-unit'. l "As a Jequipiment,lthe feolors red""=a'nd black 'will dfe'acliunitf The 'pipes-With vvliifchthe 'red pumps areconiieeted jare indicate'dfy by lines vv'liieli' v'I call`red lines, `e`achv off which is fbrokehland dotted; and the pipes'with which the llaelipumps arey connectedl 'are indicated vvnot necessarily,arraigedfih af block, such' a 'train will `not"'rdiharlyEhe 1v(viiifloo'th'fsets ol puihpluhits' at fthe' same time' ;y yand are such fa Adistancez'ipaiftj from leach other' Athat' kaftfer the" 'puip units iii l(ne set Ihave been" passed,

the Ylevers '2N2 t of' that set w'yi'llE `normally he returned to `l vertical position', fas already de- 'scibedfbefor'the pump'iin-its of the other set ivi'lll he brought" into laction 5 and 5 furthermore, the pump units of eachs'etaire in such #relation to leach" bfer," 4 and 1 'coeper'ate in site riflannerthat"a trainntering" the hlo'cl;

5 7jlroii either tlirec'tionfvill operate the levers l'ylif2 oftthat settooperate thevi'ed 'pumps to effettheclosingbf the tivoA gates; and the i Vertical 'rods 12,8,"screw-threaded attheir I cated at each terminal of each block as shown in F ig. 6. For convenient'recital, I'

will designate the vehicle running von the track as a car, but it is to be understood that the vehicle may be a locomotive, a train of cars, or a single car. I will also designate the wheel of thc'vehicle which first strikes an operating` lever 112, as the car wheel or simply as the wheel..

Assume that the lcar running on the track 13 is entering the block in the direction vindicated Aby the arrow X. The first car wheel will depress the first lever 112 in the set of pump-units at the right handterminalof the block and will in succession depress theV other levers 112y of the .same series. The depressing of the successive levers 112 will cause the piston of each red pump to force fluid from the 'cylinder of that pump into and through the red pipe line to the motor lvl. to actuate the gate 18 and effect closing of the gate. Vhile the piston. of the red i kpump is active the pistonl ofthe black pump will remain inactive by reason of the upward sliding of the plunger 38 in the tubular link 36 which is pivotal-ly connected with the R. I-I. follower in theI piston 29 ofthe black pump and conversely7 the piston of the red pump will remain inactive while the piston of the black pump is active.

If the car reverses its direction and backs;

out of the block the leading wheel of the car will depress the lever 112 'of the left hand pump-unit of the series of pump-units at the right hand terminal of the block and will depress in succession the other levers 112 of the same series, resulting in depressing the pistons in the black pumps to force the fluid through the black pipe line into and through the motor M. to actuate the gate 1S, to open the gate.

If, however, the car proceeds through the block', in the direction X the leading wheel of the car leaving the block will depress the lever 112 of the right hand pump-unit of the set of puinp-units at the left hand terminal of the block, to depress the piston ofv the black pump to force fluid throughthe left hand black pipe 25 to and through the mo-V tor to actuate the gate to open the gate; and so on 'for each successive pump-unit. From the foregoing description, it will be seen that the wheel of a car entering the block from either direction will be effective to operate the red pumps successively to attain cumulative action of the red pumps toactuate the motor, to close the gate;'and the wheel or" a car leaving the block in either direction will be effective to operatethe black pumps successively to attain cumulative actionthereof, to actuate the motor to j fopen the' gate.

Having fully described my invention -ivhat I claim as .new and desire tov secure by Letters Patent is:

1. A pump unit comprising two parallel cylinders; pistons -slidable in the respective cylinders an oscillative horizontal shaft intermediate of said cylinders; a lever fixed on rsaid'shaft and adapted to be operated by the flange of a wheel ruiming on a track ,rail adjacent to the lever; a rocking plate attached to said shaft; followers slidable in the respective pl-stons g springs supporting said followers; tubular links pivotally con- 'nectedv with the `respective followers; and

rods pivotally connected with the `respec.tive Y terminals of the rocking plate and telescopslidingvm'ovement ofeach piston independently of the companion pisto-n.

S5 ing'- iii the respective tubular links, to permit Y 2. In an appliance ofthe class described, I

the combination of twin cylinders adjacent to a railway track; pipelines communicating with the respective cylinders; an oscilla-tive shaft at right angles to the track;l a lever fixed on the shaft; a rocking plate secured on said shaft; and valves inter-communicating with the respective cylinders and pipe lines, said valves being adapted to open to permit. free'eXit 'of'oil-from the respective Ycylinders into the `respective pipe lines,'eaclr valve havingV a leak opening admitting oil under air pressure into the cylinder with which that valve is connected.

3. In an installation of the class described, the combination of a track rail; plural sets of'pump units adjacent to the track rail; an

operating` lever eo-acting with each pump j unit; a reservoir containing oil under air pressure; pipe lines in communication with the reservoir and with the respective pump units; gate stands on opposite sides of the track; engines inside the respective gate stands and operated` by oil under air pressure flowing through pipe lines; and gates operated by said engines.

4. In an appliance of the class described, the combination 'of a track rail; a-reservior containing fluid supply; duplex pipe lines receiving fluid from. the reservoir; a fluidactuated motor receiving fluid at one end the block, each pump-unit comprisingtwoA individual pumps complemental to each other, one inactive `while the other is active; a Huid motor; agate operated'by said fluid motor; pipe lines-'connecting the respective 'individual pumps with themotor; and wheel-actu' ated means for operatingone lindividual pump of each pump-unitof a series;' to effect closing' of the gate when a car going in either direction on the track comes into thelhfl-ock, *and for operating-the other'individual pump of each pump-unit of a series, to effect opening of the gate when a car goingin either -directionon' the track leaves the block. n n

6. The duplex pump structure, comprising two cylinders; hollow pistons sliding in the respective cylinders; coiled springs,one in each piston; slidab-le followers supported on Athe respective springs; tubular lin-k members' pivoted onv said followers; a rocking plateinoperative 'relation to said followers; and. plungers pivotally connected with said rocking5 plate and telescoping in said tubular links; said rocking plate plungers, tubular links; springs and hollow'pistons coacting to permit v`the depressing *of* either pistonv independently of fthe other.'

7. A duplex pump unit comprising two cylinders; pistons slida-ble in the respective cylinders a` rocking-.plate in operati-ve vrela- Y,tion tosaijd piston-s', followers in -the 're- -spect'iv'e pistons; landffconnectmg- `devices Connecting-the respective followers with i ing vbeam; means supplying fluid in lsaid cylinders; pistons slidable" in the respective cylinders; and means connecting the rocking beam with 'the respective pistons in such manner that upon-the descent of either pis- 'ton the complement-al piston will be ineffective. i

In witness whereof'I- have hereunto signed y l .my name at Peoria,y Illinois,- this 17th day of Septembergl923.- l y y l v C CHARLES BUTTRIGK.

Vitnesseszfi Y Hrm M. BROWN;

RUDEL'MGKINNEY. 

